David beery



(No Model.) I

A D. BERRY.

CASING HEAD FOR OIL, GAS, AND OTHER DEEP BORED No. 322.242. Patented July 14,1885.

fl ilvaeoxr as inveblv MAM. David Ber'ry UNITED STATES PATENT OFFICE. I

DAVID BERRY, on BALLTOWN, PENNSYL ANIA.

CASING-HEAD FOR OIL, GAS, AND OTHER DEEP BORED WELLS.

SPECIFICATION forming part of Letters Patent No. 322,242, dated July 14, 1885.

Application filed August .23, 1884. (No model.)

Pennsylvania, have invented certain new and useful Improvements in Casing -H eads for Oil, Gas, and other Deep BoredW'ells;

and I do hereby declare the following to be afull, clear, and exact "description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to casing-heads for oil and other deep bored wells; and it consists in improvements in the construction thereof, as will be hereinafter fully described, and pointed out in the claim.

Oil and gas wells and many other deep bored wells are cased with tubing, and on the top of the casing there is a cast-iron fixture called the casing head. This fixture consists of a body having on its lower side an internallyscrew-threaded flange, by which itconnects with the casing, and on its upper sideaflange, which gives an enlarged opening to receive within it a cap or cover, or a tubing-ring, or an oil-saver, as desired, said articles seating on a ledge formed by the enlarging flange. It is also provided, generally, with two side ways or openings, into which pipes can be screwed to convey away the gas or oil when a cap or oil-saver is used in the casinghead to prevent leakage of gas or oil; and to effectthis it is the practice to lay some kind of packing on the seat, on which the cap or oil-saver sets, and thus secure a tight joint; but great difficulty is experienced in thus making a properly-packed joint, for when the work of packing is being done there is always a great rush of gas and oil, and it is very diffieult to so adjust the packing material as to secure a close joint.

The object of my invention is to provide the seat of the casing-head with a permanent and fixed packing-ring which will always be ready for use, and will not become displaced by the rush of gas and oil past it as the cap or oilsaver is being adjusted in place.

My invention is illustrated in the accompanying drawings as follows: Figure 1 is a 50 perspective view of a casing head. Fig. 2

is a transverse vertical section on the line m x in Fig. 1. terial.

Parts are indicated in the several'figures. by 5 5 letters of reference, as follows: 1

A is the body of the casing-head; A, the internally-screw threaded flange, by which the head is connected with the casing. A is the expanding flange, which forms the seat a. 6 B B are the ways or branch. openings. '0 is a tubing-ring. D is a circumferential groove cut in the face of the seat a, and Dis thepacking-ring.

All parts shown are as commonly constructed, or substantially so, except that the groove D is formed in the seat a, and the packing D is inserted in the groove.

In order to insure the retention of the packing in the groove, I make the groove wider at 7d the bottom than the top, giving a dovetail effect.

The material to be used for the packing ring is not essential, so it serves the purpose. I use common squarerubber packlng.

It will be seen that when .a cap or an oilsaver is put in place it is sure to be properly. packed without theexercisepf any care or attention by the operator, and that the packing is always in position for use, and"will not be blown out by the escaping gas and oil while the cap or oil-saver is being secured in place.

The groove D need not. be wholly within the 85 seat a, as shown, for it'coul'd be cut partly within the inner wall of the flange A and not change the results at all. I do not, therefore, desire to be limited wholly to the form of the groove shown for securing the packing-ring in place, as it is not essential to the object on purpose of my invention, which is, as above stated, to provide a permanent or fixed pack ing on the seat a.

I am aware that an elastic diaphragm has been bolted to the cap and held between the cap andthe casing-head by set-screws, and this I do not claim, as my device diifers from Fig. 3 shows the packing ma In testimony whereof I aflix my signature in 10 presence of two witnesses.

DAVID BERRY.

\Vitn esses:

J NO. K. I-IALLOGK, R0131. H. PORTER. 

